Ответ:

21. were designed by Mike Reynolds

22. are recycled by the people

23. will be used to create electricity

24. are made by the people to environmental organisations

25. were protected by the local people

26. had her hair cut

27. have our plants watered

28. is having her roof prepared

29. will have a party organized

30. was having his report typed

31. - , the

32. the, -

33. the

34. the

35. - , -